Carrot (scientific name: carrot variety. sativa Hoffm。 ) is an annual or biennial herb and a variety of wild carrot in Umbelliferae. Roots are stout, rectangular, conical, orange-red or yellow. Stems erect, up to 90 cm, much branched. Long-stalked leaves, pinnately compound leaves, lobes linear or lanceolate, and acute apex; The petiole base swells to form a leaf sheath. Compound umbel; Peduncle hairy; The total bracts are many and leaflike, and the outer spokes bend inward in fruit; Flowers are usually white and sometimes reddish; Petals are unequal in length. This kind of fruit is conical with white thorns on the edge. It blooms in April.